When you work in the cybersecurity domain you face some daunting challenges. For one thing, cybersecurity is always changing – there are new offensive and defensive tactics, techniques, and procedures (TTPs) constantly that you try to keep up with. Alternatively, cybersecurity is an extremely broad topic, spanning technology, regulations, law enforcement, geo-political conflict, critical infrastructure, etc.
When people ask me how to learn about disparate cybersecurity topics, I reply with a single word – “read.” More specifically, I recommend that they go to their public library and take out one of the many fantastic books written in the past few years on malware (Worm, by Mark Bowden), cybercrime (Kingpin, by Kevin Poulsen), hackers (We Are Anonymous, Parmy Olson), Cyberwar (Cyberwar, Richard Clarke), etc. There are loads of other good books available by authors like James Bamford, Steven Levy, John Markoff, Kevin Mitnick, Bruce Schneier, and Cliff Stoll as well.